CASE NUMBER: 90-5791-CT-TRF CASE DESCRIPTION: COVISTA, INC. DOCUMENT SIGNED ON: 10/20/2024 DATE OF SERVICE: ________________________________________ 02/07/2001 Certificate No. 90-5791 issued. 11/15/2000 In the matter of the application of TotalTel, Inc. to change its name to Covista, Inc. 12/01/1990 Initial tariff filed.